There are many ways to roll fenders, but I had the luxury of forming my fenders on a bench before paint.
I have a lot of respect for those of you who have done this without cracking the paint.
I was able to get a tight edge...about .175". That gives me almost a 1/2" of extra tire clearance from stock.
A small gap was left so I can protect it from rust and clean it out from time to time.
Here's the video:
https://youtu.be/2p-EJJAGkuI